Patents by Inventor Takahide Onuma

Takahide Onuma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12151490
    Abstract: A printing apparatus includes a conveyance unit to convey a print medium, a belt, a tensioner, and a control unit. The belt transmits a driving force of a drive unit to the conveyance unit. The tensioner is displaceable and makes pressure contact with the belt to generate tension. The control unit controls driving of the drive unit in a state where the tensioner is in pressure contact with the belt. The control unit performs first control in which the drive unit is driven with a first control value, which is not based on a driving amount detected by a detection unit. Where the detection unit detects the driving amount, the control unit subsequently performs second control in which the drive unit is driven with a second control value, which is based on the driving amount detected by the detection unit.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: November 26, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keisuke Arita, Takahide Onuma, Yasunori Matsumoto, Satoru Nitobe, Masashi Ito, Yuki Emoto
  • Publication number: 20210252890
    Abstract: A printing apparatus includes a conveyance unit to convey a print medium, a belt, a tensioner, and a control unit. The belt transmits a driving force of a drive unit to the conveyance unit. The tensioner is displaceable and makes pressure contact with the belt to generate tension. The control unit controls driving of the drive unit in a state where the tensioner is in pressure contact with the belt. The control unit performs first control in which the drive unit is driven with a first control value, which is not based on a driving amount detected by a detection unit. Where the detection unit detects the driving amount, the control unit subsequently performs second control in which the drive unit is driven with a second control value, which is based on the driving amount detected by the detection unit.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 19, 2021
    Inventors: Keisuke Arita, Takahide Onuma, Yasunori Matsumoto, Satoru Nitobe, Masashi Ito, Yuki Emoto
  • Patent number: 10549554
    Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: February 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito, Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Patent number: 10543698
    Abstract: A platen includes a plurality of supporting portions capable of supporting a sheet; negative pressure chambers, to which a negative pressure is supplied, so as to suck a sheet facing the supporting portions to the supporting portions; and an ink receiver that receives ink ejected from a printhead to the outside of the sheet supported by the supporting portions. The plurality of supporting portions are arranged in a sheet width direction transverse a sheet conveyance direction. The plurality of negative pressure chambers are disposed in a manner corresponding to the plurality of supporting portions, respectively.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: January 28, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahide Onuma, Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Yasunori Saito
  • Patent number: 10183505
    Abstract: A printing apparatus includes a suction unit configured to allow a negative pressure, by which a sheet is sucked to a supporting portion, to act on the sheet; and ink receivers configured to receive ink ejected outside of the sheet. Waste ink ejected to the ink receivers is guided to a waste ink discharge port formed on an outer peripheral wall of a platen through waste ink channels. A sheet sucking mechanism configured to apply the negative pressure is disposed adjacent to the suction unit. A discharging mechanism configured to forcibly discharge waste ink outside of the platen is connected to the waste ink discharge port.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 22, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiji Ogasawara, Tetsuji Kurata, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito
  • Publication number: 20180339530
    Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.
    Type: Application
    Filed: August 7, 2018
    Publication date: November 29, 2018
    Inventors: Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito, Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Patent number: 10071572
    Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: September 11, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito, Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Publication number: 20180015741
    Abstract: A platen includes: a plurality of supporting portions capable of supporting a sheet; negative pressure chambers, to which a negative pressure is supplied, so as to suck a sheet facing the supporting portions to the supporting portions; and ink receiver and that receive ink ejected from a printhead to the outside of the sheet supported by the supporting portions. The plurality of supporting portions are arranged in a sheet width direction (i.e., an X direction) transverse a sheet conveyance direction. The plurality of negative pressure chambers are disposed in a manner corresponding to the plurality of supporting portions, respectively.
    Type: Application
    Filed: September 27, 2017
    Publication date: January 18, 2018
    Inventors: Takahide Onuma, Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Yasunori Saito
  • Patent number: 9802426
    Abstract: A platen includes: a plurality of supporting portions capable of supporting a sheet; negative pressure chambers, to which a negative pressure is supplied, so as to suck a sheet facing the supporting portions to the supporting portions; and ink receiver and that receive ink ejected from a printhead to the outside of the sheet supported by the supporting portions. The plurality of supporting portions are arranged in a sheet width direction (i.e., an X direction) transverse a sheet conveyance direction. The plurality of negative pressure chambers are disposed in a manner corresponding to the plurality of supporting portions, respectively.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: October 31, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takahide Onuma, Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Yasunori Saito
  • Publication number: 20160347093
    Abstract: A printing apparatus includes: a suction unit configured to allow a negative pressure, by which a sheet is sucked to a supporting portion, to act on the sheet; and ink receivers and configured to receive ink ejected to the outside of the sheet. Waste ink ejected to the ink receiver is guided to a waste ink discharge port formed on an outer peripheral wall of a platen through waste ink channels. A sheet sucking mechanism configured to apply the negative pressure is disposed adjacent to the suction unit. A discharging mechanism configured to forcibly discharge waste ink outside of the platen is connected to the waste ink discharge port.
    Type: Application
    Filed: May 20, 2016
    Publication date: December 1, 2016
    Inventors: Seiji Ogasawara, Tetsuji Kurata, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito
  • Publication number: 20160347092
    Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.
    Type: Application
    Filed: May 20, 2016
    Publication date: December 1, 2016
    Inventors: Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Takahide Onuma, Yasunori Saito, Arihito Miyakoshi, Masahiko Kubota, Yusuke Imahashi, Nobuhito Yamaguchi, Hiroshi Arimizu, Yoshinori Itoh
  • Publication number: 20160347091
    Abstract: A platen includes: a plurality of supporting portions capable of supporting a sheet; negative pressure chambers, to which a negative pressure is supplied, so as to suck a sheet facing the supporting portions to the supporting portions; and ink receiver and that receive ink ejected from a printhead to the outside of the sheet supported by the supporting portions. The plurality of supporting portions are arranged in a sheet width direction (i.e., an X direction) transverse a sheet conveyance direction. The plurality of negative pressure chambers are disposed in a manner corresponding to the plurality of supporting portions, respectively.
    Type: Application
    Filed: May 20, 2016
    Publication date: December 1, 2016
    Inventors: Takahide Onuma, Tetsuji Kurata, Seiji Ogasawara, Masakazu Tsukuda, Yasunori Saito
  • Publication number: 20100173067
    Abstract: An apparatus includes a holding mechanism that holds a substrate, a material container where a film-forming material is gasified, a release port for releasing the gasified film-forming material toward the substrate; a material container heating unit for heating the material container, a transport pipe that is detachably linked to the material container by a linking portion and serves to transport the gasified film-forming material from the material container to the release port, a transport pipe heating unit for heating a remaining zone of the transport pipe other than a portion in a vicinity of the linking portion, and a linking portion heating unit that is disposed independently from the transport pipe heating unit and serves for heating the portion of the transport pipe in the vicinity of the linking portion.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 8, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Nobutaka Ukigaya, Kiyoshi Kuramochi, Takahide Onuma
  • Publication number: 20090061084
    Abstract: In a vapor deposition method of forming a film of an organic compound on a substrate, a material containing portion filled with a vapor deposition material is heated, to thereby evaporate or sublimate the vapor deposition material and discharge the vapor deposition material to a film formation space of a vacuum chamber through a plurality of pipings connected to the material containing portion, and a piping having a smaller conductance among the pipings having different conductances is provided with a flow rate adjusting mechanism for controlling an amount of the vapor deposition material released into the vacuum chamber, whereby a film formation speed can be adjusted finely.
    Type: Application
    Filed: August 18, 2008
    Publication date: March 5, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Takahide Onuma, Nobutaka Ukigaya, Takehiko Soda, Kiyoshi Kuramochi, Tomokazu Sushihara, Naohiro Nakane